DETROIT, MI -- If you thought the first round of shockingly cold temperatures earlier this month would be the end of it, think again.

The National Weather Service, in an advisory issued for 17 counties ranging from Metro Detroit to mid-Michigan, warns of an extended period of cold with wind chill temperatures ranging from 10 to 30 degrees below zero from Sunday night to Wednesday night.

The Detroit area Saturday night could see will chills as low as 25 degrees below, according to the advisory.

"This will result in frostbite and lead to hypothermia if precautions are not taken," the weather service warned. "If you must venture outdoors, make sure you wear a hat and gloves."

Hats, gloves and snow shovels were in short supply at Detroit area stores after a first period of brutal cold earlier this month that led to several deaths.

Sudden snowfall Saturday morning caused a number of crashes on Metro Detroit highways before clearing up shortly after noon.